Home / 2,781.72-4,168.68-1,845.76

Finding the Fourth Proportional to 2,781.72, 4,168.68 and 1,845.76

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Solution

The fourth proportional to 2,781.72, 4,168.68 and 1,845.76 is: 2,766.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,781.72 : 4,168.68 = 1,845.76 : x
  2. Step 2: Convert to fraction form
    2,781.72/4,168.68 = 1,845.76/x
  3. Step 3: Cross multiply
    2,781.72x = 4,168.68 × 1,845.76
  4. Step 4: Simplify right side
    2,781.72x = 7,694,382.80
  5. Step 5: Solve for x
    x = 7,694,382.80/2,781.72
  6. Step 6: Final answer
    x = 2,766.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.